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https://issues.apache.org/jira/browse/CALCITE-5276?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17611984#comment-17611984
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Julian Hyde commented on CALCITE-5276:
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+1 Running tests now; will merge shortly.
> Implicitly convert strings to geometries
> ----------------------------------------
>
> Key: CALCITE-5276
> URL: https://issues.apache.org/jira/browse/CALCITE-5276
> Project: Calcite
> Issue Type: Improvement
> Components: spatial
> Reporter: Bertil Chapuis
> Assignee: Bertil Chapuis
> Priority: Minor
> Fix For: 1.33.0
>
>
> Postgis and H2GIS implicitly transform strings into a geometries so that one
> can write the following query:
> {{SELECT ST_AsText('POINT(-71.064544 42.28787)');}}
> Instead of:
> {{SELECT ST_AsText(ST_GeomFromText('POINT(-71.064544 42.28787)'));}}
> supports this kind of conversion. Should I introduce a new SqlTypeTranform
> (TO_GEOMETRY)? Thanks a lot for your help, I'm still discovering the
> internals of calcite.
> The idea would be to introduce a SqlTypeTransform, change the
> SqlTypeAssignmentRule (see CALCITE-3550), add tests in TypeCoercionTest, and
> update the doc.
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